San Anselmo’s downtown was closed and the Central Marin Police Authority was urging people to steer clear of the area.

In Fairfax, “we had Park Road completely flooded because of the creek overflowing,” Morin said. “The water flow flooded most of Bolinas Road through the downtown.

“People that are in flood areas, near the creek, they generally know what to experience. The catch-all we say is not to drive through flooded streets or go through creek waters; it’s very dangerous, the water is rushing fast. Be aware and be prepared.”

Sir Francis Drake Boulevard was flooded near Bon Air Shopping Center, among road closures across the county.

Eastbound lanes of the Richmond-San Rafael Bridge were closed due to an overturned trailer.

The county partially activated its emergency operations center to monitor incidents across Marin, said Marin County sheriff’s Lt. Doug Pittman.

Mill Valley reported flooding throughout the city.

Miller Avenue was closed at Almonte Street, with La Goma Way, off Miller Avenue, also shut off, according to Mill Valley police.

Flooding was also reported along parts of Camino Alto. Although the street was not yet closed to traffic as of 8:30 a.m., officials expected at least one lane to be closed if the heavy downpour continued.

Across the county, school districts and the College of Marin canceled classes.

Closures included Kentfield School District’s Anthony G. Bacich School in Greenbrae and A.E. Kent Middle Schools in Kentfield.

Ross School was also closed, along with Sausalito Marin City School District’s Bayside Martin Luther King Jr. Academy. Tamalpais Union High School District also canceled classes at its five campuses.

Lagunitas School District, Larkspur-Corte Madera School District, Mill Valley School District, Ross Valley School District, Marin Catholic High School and St. Anselm Elementary School also canceled classes for the day.

Districts that remained open as of 8:30 a.m. included: Bolinas-Stinson Union School District, Dixie School District, Marin County Office of Education’s campuses, Nicasio School District, Novato Unified School District, Reed Union School District, Lincoln and Union school districts, San Rafael City Schools, Sausalito Marin City School District’s Willow Creek Academy, Shoreline Unified School District.

"The easy part is buying the body cameras and issuing them to the officers. They are not that expensive," said Jim Pasco, executive director at the National Fraternal Order of Police. "But storing all the data that they collect - that cost is extraordinary. The smaller the department, the tougher it tends to be for them."